Provides adapters for QR code providers for my QR payment libraries.

Supported libraries:
  - [rikudou/euqrpayment](https://github.com/RikudouSage/QrPaymentEU)
  - [rikudou/skqrpayment](https://github.com/RikudouSage/QrPaymentSK)
  - [rikudou/czqrpayment](https://github.com/RikudouSage/QrPaymentCZ)
  - [hubipe/huqrpayment](https://github.com/hubipe/QrPaymentHU)


Supported QR code providers:
  - `endroid/qr-code` (v 4.x)
  - `endroid/qr-code` (v 3.x)
  - `bacon/bacon-qr-code`
  - `chillerlan/php-qrcode`

If you want other QR generating libraries supported, open an issue or create a pull request.
